How many wires does a ECT sensor have?
two
It is a two-wire thermistor immersed in coolant and measures its temperature. The onboard computer uses the signal of ECT as the main correction factor when calculating the ignition advance and the injection duration. The ECT sensor is shown on fig. 1.
What is an ECT sensor?
A coolant temperature sensor (CTS) (also known as an ECT sensor or ECTS (engine coolant temperature sensor) is used to measure the temperature of the coolant/antifreeze mix in the cooling system, giving an indication of how much heat the engine is giving off.
How does the coolant sensor work on a Volvo?
It monitors the engine coolant on the engine side of the thermostat. This provides an accurate reading of both banks of the engine. The sensor is a negative temperature coefficient (NTC) sensor. This means as engine coolant temperature increases, sensor internal resistance decreases, causing a drop in sensor voltage.
How to replace ECT and thermostat in Volvo S70?
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How to test coolant temperature in Volvo V70?
Testing: Working at the coolant temperature sensor, press the release tab (green arrow) and pull the electrical connector straight out to remove it. Testing: Working at the DME side of the sensor connector, test the voltage from the DME with the key on and the engine off. Terminal 1 (red arrow) should be about 5 volts (green arrow).
What kind of engine does a Volvo V70 have?
When it comes to engines, the V70 has a 1.6-litre four-cylinder D2 that provides 113bhp and 270Nm of torque. Apart from that, it also comes with 2.0-litre five-cylinder 134bhp D3 and 161bhp D4 engines. The D3 engines are capable of delivering a smooth yet efficient performance, which is preferred by most of the buyers.